community: Fix redundancy in code. (#29022)

In my previous PR (#28953), I added an unwanted condition for validating
the Azure ML Endpoint. In this PR, I have rectified the issue.

Author: ashvin-a

libs/community/langchain_community/llms/azureml_endpoint.py

@@ -434,7 +434,7 @@ def validate_endpoint_url(cls, field_value: Any) -> str:
             raise ValueError(
                 "`endpoint_url` should contain the full invocation URL including "
                 "`/score` for `endpoint_api_type='dedicated'` or `/completions` "
-                "or `/chat/completions` or `/models/chat/completions` "
+                "or `/models/chat/completions` "
                 "for `endpoint_api_type='serverless'`"
             )
         return field_value
@@ -456,18 +456,16 @@ def validate_endpoint_api_type(
                 "Endpoints of type `dedicated` should follow the format "
                 "`https://<your-endpoint>.<your_region>.inference.ml.azure.com/score`."
                 " If your endpoint URL ends with `/completions` or"
-                "`/chat/completions` or `/models/chat/completions`,"
+                "`/models/chat/completions`,"
                 "use `endpoint_api_type='serverless'` instead."
             )
         if field_value == AzureMLEndpointApiType.serverless and not (
             endpoint_url.endswith("/completions")  # type: ignore[union-attr]
-            or endpoint_url.endswith("/chat/completions")  # type: ignore[union-attr]
             or endpoint_url.endswith("/models/chat/completions")  # type: ignore[union-attr]
         ):
             raise ValueError(
                 "Endpoints of type `serverless` should follow the format "
                 "`https://<your-endpoint>.<your_region>.inference.ml.azure.com/completions`"
-                " or `https://<your-endpoint>.<your_region>.inference.ml.azure.com/chat/completions`"
                 " or `https://<your-endpoint>.<your_region>.inference.ml.azure.com/models/chat/completions`"
             )